Bound paper element with functional surfaces

1. A bound paper element comprising a plurality of bound pages, and at least a first page and a second page sandwiching opposite sides of said plurality of bound pages, wherein said first page comprises an embossed plastic layer of an embossed plastic material and said second page comprises an expanded thermoplastic layer of an expanded thermoplastic material; and said embossed plastic layer being arranged opposite to said expanded thermoplastic layer.

2. A bound paper element according to claim 1, wherein at least one of said first page and said second page has at least one friction layer that is arranged adjacent one of the opposite sides of the plurality of bound pages and that is made of material having a coefficient of friction sufficient to maintain the at least one of said first page and said second page substantially fixed with respect to the plurality of bound pages.

3. A bound paper element according to claim 1, wherein at least one of a book binding and a ribbon binding provides binding for the plurality of bound pages.

4. A bound paper element according to claim 1, wherein at least one of said first page and said second page (4) comprises a layer (3d, 4c) selected from a group consisting of cardboard, resins and thermoplastic rubbers.

5. A bound paper element according to claim 1, wherein said second page (4) is provided with a sideways-folding extension.

6. A bound paper element according to claim 1, wherein at least one corner of at least one of said first page and said second page is rounded.

7. A bound paper element according to claim 1, further comprising a binding that binds the plurality of bound pages and the first page and the second page together to form a stack, the binding being selected from a group consisting of a spiral type, an open rigid type, a paper covered type, a book type, and a ribbon type, the binding being arranged to secure at most one edge of the stack together to permit an opposite edge of the stack to freely move relative to each other about the binding.

8. A bound paper element according to claim 7, further compromising a plurality of pages between the first page and the second page as part of the stack and being bound by the binding at the one side of the stack.